Latest topics
» Battle of Britain Flight grounded
by John Thu Aug 17, 2017 11:43 pm

» Insurance Issues
by John Thu Aug 17, 2017 11:37 pm

» worlds fastest shed
by Rum Tum Tugger Thu Aug 17, 2017 8:29 am

» Scamp Insurance
by Mk3rob Tue Aug 15, 2017 11:24 pm

» NOT A Mk1 darn sarf on Ebay
by Mk3rob Mon Aug 14, 2017 2:17 pm

» Mk3 6 wheeler for sale
by Mk3rob Mon Aug 14, 2017 2:13 pm

» SCAMP PICNIC
by Mk3rob Mon Aug 14, 2017 10:54 am

» Scamp Picnic Reminder
by Mk3rob Sun Aug 13, 2017 11:28 am

» Mk2 on Ebay
by Rum Tum Tugger Sat Aug 12, 2017 11:49 pm


Drive shaft advice

View previous topic View next topic Go down

Drive shaft advice

Post  dr r on Thu Mar 02, 2017 12:31 pm

With old engine stripped out I find I have post 1974 drive shafts with inner CV joints BUT I have a (possibly) recon engine with a diff designed for the rubber inner joints. What is the best way forward. Do I take off diff from removed engine and fit to recon engine? Are the diffs compatible?

Laurence

dr r

Number of posts : 17
Location : Royston Herts
Job/hobbies : engineer
Registration date : 2017-01-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  Rum Tum Tugger on Wed Mar 08, 2017 8:59 am

I believe diffs are generally interchangeable. However it's good practice to keep the final drive pinion and diff crownwheel together as a set, so that means the pinion needs to be swapped. It's also a good idea to keep the diff housing with its gearbox, as they are bored for fixings together as a pair. However, if you swap a diff from one 'box to another, you'll need to re-shim it to get the bearing preload right - details in Haynes.

If the old gearbox is in good nick it may be worth swapping it onto the recon engine: if marginally good it may be worth overhauling it with new bearings & baulk rings.
avatar
Rum Tum Tugger

Number of posts : 887
Age : 73
Location : Ivinghoe, Bucks/Beds
Job/hobbies : Retired computer boffin, dancing master
Registration date : 2008-06-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  Steve G on Wed Mar 08, 2017 8:37 pm

Do the rubber coupling boxes come with the early magic wand or cooper remote style gear lever ? If so the casings are probably different, been a long while since I have looked at one.

Steve G

Number of posts : 336
Location : .
Job/hobbies : .
Registration date : 2014-02-26

View user profile

Back to top Go down

Re: Drive shaft advice

Post  dr r on Sun Mar 12, 2017 11:18 am

Thanks Gents. From what I can see the diffs are the same and both have the long rod lever gear change. The old engine is definitely buggered but I don't know the state of the gearbox. The recon engine has new flywheel and clutch so I am hoping a gearbox in good condition. I guess I'll strip both diffs first and see condition.

dr r

Number of posts : 17
Location : Royston Herts
Job/hobbies : engineer
Registration date : 2017-01-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  dr r on Sun Mar 12, 2017 2:49 pm

OK I think I've confused myself and worried unnecessarily. The UJ knocked off and I'm left with a splined shaft identical to the CV shafts on the car.

dr r

Number of posts : 17
Location : Royston Herts
Job/hobbies : engineer
Registration date : 2017-01-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  dr r on Sun Mar 12, 2017 2:51 pm



dr r

Number of posts : 17
Location : Royston Herts
Job/hobbies : engineer
Registration date : 2017-01-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  Rum Tum Tugger on Mon Mar 13, 2017 7:07 am

Looks like you're in luck then!
I had an idea that there were 3 different types of inboard universal joint: rubber Maltese cross, Hardy Spicer UJ and pot joint.  Each has a different spline pattern, and a different diff output shaft to match. However I thought I'd better check before I posted - details here.
avatar
Rum Tum Tugger

Number of posts : 887
Age : 73
Location : Ivinghoe, Bucks/Beds
Job/hobbies : Retired computer boffin, dancing master
Registration date : 2008-06-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  dr r on Mon Mar 13, 2017 1:43 pm

I looked at that but the output shaft depicted is held on by a bolt - mine has no such bolt.  I think I must have some hybrid Question Question

dr r

Number of posts : 17
Location : Royston Herts
Job/hobbies : engineer
Registration date : 2017-01-25

View user profile

Back to top Go down

Re: Drive shaft advice

Post  wezgit daan saaf on Sun Apr 23, 2017 10:58 pm

I thought the helix on the diff gears was different on the early gearboxes with the "malteses cross" type joints, I know they are different on the drop gears.
avatar
wezgit daan saaf

Number of posts : 1033
Location : HASTINGS
Job/hobbies : Mechanic/Scamps & family
Registration date : 2008-08-16

View user profile

Back to top Go down

Re: Drive shaft advice

Post  Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum